I do not see the point. People say that GTS 8800 should be faster than 240. My CPU is not at full load. Where is the difference?
your graphic card has 25% more memory and DDR3. Does this leads to such a big difference?
I am using the Gigabyte 965P-DQ6 motherboard, which has the ALC888 sound chip on board. more details: http://www.gigabyte.de/Products/Motherboard/Products_Overview.aspx?ProductID=4300
I tested the game on 1024x768 but things didn't get better.